Mixing characterization in different helically coiled configurations by laser-induced fluorescence

Helically Coiled Heat Exchangers

Mixing Measurements Using Laser Induced Fluorescence

In this article, we present a novel method of quantitatively measuring mixing using laser induced fluorescence. This method is independent of flow and light sheet characteristics. The premise of this work is that molecular level mixing can be quantified through a scalar pH field in an aqueous solution. A two dimensional pH field can be determined in the solution by imaging the laser induced flu...

Mixing of the Immiscible Liquids in the Entrance Region of a T-Type Chamber Using Laser Induced Fluorescence (LIF) Method

A Laser Induced Fluorescence technique (LIF) has been used to study the mixing behavior of two emerging streams in a T-Type mixing chamber. A mixing index on the basis of digital image light intensities is calculated. It has been shown that averaging over more than 800 images leads to a stable mixing index calculation. Moreover, the effect of equal and un-equal flow rates on the mixing behavior...

Mechanical Resonances of Helically Coiled Carbon Nanowires

Despite their wide spread applications, the mechanical behavior of helically coiled structures has evaded an accurate understanding at any length scale (nano to macro) mainly due to their geometrical complexity. The advent of helically coiled micro/nanoscale structures in nano-robotics, nano-inductors, and impact protection coatings has necessitated the development of new methodologies for dete...

Laser-induced tissue fluorescence in radiofrequency tissue-fusion characterization.

Heat-induced tissue fusion is an important procedure in modern surgery and can greatly reduce trauma, complications, and mortality during minimally invasive surgical blood vessel anastomosis, but it may also have further benefits if applied to other tissue types such as small and large intestine anastomoses. We present a tissue-fusion characterization technology using laser-induced fluorescence...